Replaceable refills, save you the trouble of repurchasing a new pencil, and you can share them with family and friends. These pencil nibs are made with graphite material and are for use. They are simple in design, but very practical to use and will give you a good experience.Features-Color:Black-Material:Graphite-Size:1.60X0.50X0.50cm/0.63X0.20X0.20in-These replaceable pencils nibs are easy to use and convenient to carry, and you can take them to any place.-Replaceable refills, does not need to be sharpened, which helps you reduce the time of sharpening.-The replacement nibs can be replaced in time when the unlimited pen does not flow smoothly or the nibs are .-The replacement nibs kit is a good accessory for study and office, giving you a good experience.-Sufficient quantity can meet your various replacement demands, and you can share them with your friends.Package list: 25 x Pencil Replaceable Refills